This is regular retail disks, right?
MS is probably right then. Retail disks (unless damaged) are readable by just about any and all optical drives. That being the case, you have a couple options.
You could attach an external DVD drive to your computer and load that way. You don't need the install media after you fully install FSX.
You could also try to make a copy of the retail disks on other computer. Burn the copies at the lowest possible speed to maximize the likelihood that your laptop DVD drive will read the disks.
It is also a possibility that your optical drive is defective. A DVD-RW or a DVD-ROM actually uses 2 lasers of different wavelengths. One to read DVDs and one to read CDs. Have you experienced any issues reading either type of media?
If so, you try to clean the drive (using a commercial cleaning DVD that you can get at any electronics store, Walmart, Target, etc).
You can also replace the DVD drive in your system fairly easily and inexpensively.
Please clarify.